This did not make a buzzing sound when flying, as I've heard from Narcissus Bulb Fly. Also, its legs have yellow, not a solid black as in Narcissus Bulb Fly. Photographed on the late-blooming Montauk Daisies in my garden. It held its wings apart, not overlapping as in NBF. The only fly that appears to be similar in the field guides I checked was the Drone Fly? I've included more than three photos as I hope the various angles will help in making an ID. But, it may be more obvious than I'm aware of!